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126531444643 is a prime number
BaseRepresentation
bin111010111010111011…
…1001001111110100011
3110002121012020101011121
41311311313021332203
54033114022212033
6134043331553111
712066365351032
oct1656567117643
9402535211147
10126531444643
114973077a15a
122063315b797
13bc163c7906
1461a4974719
1534585b862d
hex1d75dc9fa3

126531444643 has 2 divisors, whose sum is σ = 126531444644. Its totient is φ = 126531444642.

The previous prime is 126531444539. The next prime is 126531444673. The reversal of 126531444643 is 346444135621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-126531444643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126531444643.

It is not a weakly prime, because it can be changed into another prime (126531444673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63265722321 + 63265722322.

It is an arithmetic number, because the mean of its divisors is an integer number (63265722322).

Almost surely, 2126531444643 is an apocalyptic number.

126531444643 is a deficient number, since it is larger than the sum of its proper divisors (1).

126531444643 is an equidigital number, since it uses as much as digits as its factorization.

126531444643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 43.

The spelling of 126531444643 in words is "one hundred twenty-six billion, five hundred thirty-one million, four hundred forty-four thousand, six hundred forty-three".